Coleus Care Guide
Plectranthus scutellarioides
Quick Answer
Coleus is all about light and pinching. Without enough bright light, those brilliant reds, purples, and yellows fade to dull green within weeks. Pinch off the growing tips and any flower spikes regularly — coleus that flowers puts its energy into seed production and the leaves become smaller and less vibrant. It roots incredibly easily from cuttings, so propagating to overwinter is worth the minimal effort.
⭐Difficulty
Easy
☀️Light
Bright indirect to direct
💧Watering
Every 1–3 days (outdoors) / weekly indoors
🌫️Humidity
Medium (40–60%)
🌡️Temperature
60–85°F
📈Growth Rate
Fast
Toxicity
Source: ASPCA Animal Poison Control
Watering
Summer
Every 1–3 days (outdoors) / weekly indoors
Winter
Every 1–2 weeks
Method: Keep evenly moist; avoid drought
In summer, water coleus approximately weekly indoors (more frequently outdoors in heat); in winter, every 1–2 weeks. Rather than following a calendar, keep the soil evenly moist — coleus is very sensitive to drought and wilts fast. Water when the top inch of soil feels dry, then water thoroughly. Drooping with dry soil means it needs water immediately; coleus wilts dramatically but recovers quickly once watered.
Light Requirements
Bright indirect to direct
Coleus does best on a south- or west-facing windowsill where it gets at least 2–4 hours of direct sun. Without direct light, coleus stretches toward the light source, loses its compact shape, and the vivid leaf colours fade significantly. Indoors, more light is almost always better — a bright south window or a grow light keeps the colours at their most intense.
Soil & Potting
Soil: Rich, well-draining potting mix
Pot: Any pot with drainage
Temperature & Humidity
Temperature: 60–85°F (16–29°C)
Humidity: Medium (40–60%)
Fertilizing
Frequency: Monthly spring/summer
Type: Balanced fertilizer, half strength
Common Problems
Fading color
Fading color → Insufficient light. Move to brighter spot. Coleus leaf colour is directly tied to light intensity — without enough light, the vibrant markings wash out within a few weeks. Move the plant meaningfully closer to a window. Colours won't recover on existing leaves but new growth will come in vividly once light improves. A grow light on a 12-hour timer is very effective for indoor coleus.
Wilting
Wilting → Underwatering. Water immediately. Coleus wilts dramatically when dry but recovers within hours of thorough watering. While it bounces back, repeated drought stress weakens the plant over time and increases susceptibility to pests. Check soil moisture daily in warm weather.
Bolting (flowering)
Flowering diverts energy away from foliage and causes the leaves to become smaller and less colourful. Pinch off flower spikes as soon as they appear — you'll see them as elongated, spiky stems different from the leaf growth. Regular pinching keeps the plant in a vegetative state and the foliage lush and vibrant.
Leggy stems
Leggy stems → Pinch back regularly to maintain bushy shape. Move the plant significantly closer to a light source rather than just a few inches. Coleus naturally wants to climb; regular pinching forces it to branch and stay compact. Pinch just above a leaf node, and use those cuttings to propagate more plants.
Propagation
Coleus is one of the easiest plants to propagate — stem cuttings root in water within a week in warm conditions. Take a 4–6 inch cutting just below a node, remove the lower leaves, and place in a clean jar of water in bright indirect light. Change the water every 3–4 days. Roots appear within 7–14 days; pot up once they reach an inch long. You can also root directly in moist potting mix. The thing that trips people up: waiting too long to pot up water-rooted cuttings — very long water roots don't adapt to soil as readily as shorter ones.
Seasonal Care Calendar
🌸 Spring
Spring is when coleus really takes off as light levels increase. Increase watering and begin fertilising every 2–4 weeks with a balanced liquid fertiliser. This is the best time to take cuttings from overwintered plants and pot them up to get a head start on the season. Start pinching tips early to encourage branching.
☀️ Summer
Summer is peak coleus season — the combination of heat, light, and regular pinching produces the most vivid colours and densest growth. Water frequently, especially in warm weather, and pinch regularly. If moving outdoors, introduce gradually to avoid sun scorch — morning sun with afternoon shade is ideal for most varieties.
🍂 Fall
As light decreases in fall, leaf colours may become less intense. Bring outdoor coleus inside before temperatures drop below 50°F — it's frost-sensitive. Take cuttings from your favourite plants to overwinter on a bright windowsill indoors.
❄️ Winter
Coleus slows significantly in winter. Reduce watering and hold off on fertilising. Maintain it on the brightest windowsill you have or under a grow light. It may get somewhat leggy in low winter light — don't be surprised. Taking cuttings in late winter prepares you for a strong spring restart.